<p>page-not-found works! 404页面不存在</p>

<button (click)="getAllkeys()">getAllkeys</button> <br>
<button (click)="savekey(''+Math.random(),Math.random())">savekey</button>  <br>
<button (click)="clear()">clear</button> <br>
<button (click)="testhttpllq()">testhttpllq</button> <br>
<span> {{ dat }}</span>


